<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details //
/////////////////////////////////////////////////////////////////
// //
// module.audio.aa.php //
// module for analyzing Audible Audiobook files //
// dependencies: NONE //
// ///
/////////////////////////////////////////////////////////////////
class getid3_aa extends getid3_handler
{
function Analyze() {
$info = &$this->getid3->info;
fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
$AAheader = fread($this->getid3->fp, 8);
$magic = "\x57\x90\x75\x36";
if (substr($AAheader, 4, 4) != $magic) {
$info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($AAheader, 4, 4)).'"';
return false;
}
// shortcut
$info['aa'] = array();
$thisfile_au = &$info['aa'];
$info['fileformat'] = 'aa';
$info['audio']['dataformat'] = 'aa';
$info['audio']['bitrate_mode'] = 'cbr'; // is it?
$thisfile_au['encoding'] = 'ISO-8859-1';
$thisfile_au['filesize'] = getid3_lib::BigEndian2Int(substr($AUheader, 0, 4));
if ($thisfile_au['filesize'] > ($info['avdataend'] - $info['avdataoffset'])) {
$info['warning'][] = 'Possible truncated file - expecting "'.$thisfile_au['filesize'].'" bytes of data, only found '.($info['avdataend'] - $info['avdataoffset']).' bytes"';
}
$info['audio']['bits_per_sample'] = 16; // is it?
$info['audio']['sample_rate'] = $thisfile_au['sample_rate'];
$info['audio']['channels'] = $thisfile_au['channels'];
//$info['playtime_seconds'] = 0;
//$info['audio']['bitrate'] = 0;
return true;
}
}
?>
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